ok my friend Jay has a 91 camaro RS 305 TBI auto

his current mods are headman headers true dual 3 inch exhaust no cats to dual glaspacks and dumps before rear axle

373 posi

underdrive pulleys

smog pump removed

drop base air cleaner

high performance igniton wires and plugs

he stil has the stock tranny with no mods to it

and everything else is like completely stock

he was asking me what cheap mods he can do to it to make it just a little faster but not nothing to where it is a hot rod

i told him throw a shift kit,stall converter,corvette servo (i have no idea what this does, or if it really really help any, i just know i had one put in mine)

maybe a chip and a dyno tuning

he doesnt want to have any forced induction or nitrous so that is out of the question and he wants to try to avoid new heads,cam,intake,throttle body


any suggestions, i really think tuning that tranny would help some

he wants to get the car to about 9 second flat 1/8 mile time ish maybe a little lower and he is now at a 9.8 so throw out some suggestions please and thanks